Elastic sealant products are used in expansion joints between ceramic tiles to prevent the ingress of water, dirt and other unwanted materials. These sealants also provide great flexibility to accommodate movement.

The most suitable putties for sealing expansion joints are polyurethane or silicone-based elastomeric putties. These putties stick perfectly to the materials commonly used in construction and have a high elasticity and durability over time, as well as a high resistance to water and weathering.